STEAM PROPERTIES & FLOW CHARACTERISTICS
SIZING OF CONDENSATE RETURN LINE, FLASH TANK DIAMETER & VENT LINE • Velocity of Flash Steam in Condensate Return Lines should be between 4000 and 6000 ft/min.
• Velocity in Flash Tank should be less than 600 ft/min. • Velocity in a Vent Pipe should be less than 4000 ft/min.
6000 4000 3000 2000 (ft/min) Flash Steam Velocity
(ft/sec) Flash Steam Velocity
Sizing Chart for: Condensate Line • Flash Tank Diameter • Vent Line
100 66 50 33
Condensate Return Line Vent Line
C
E
1000
17 10
Flash Tank
600
D
20,000 30,000 50,000 5,000 8,000 10,000
Multiply Chart Velocity by Factor below to get Velocity in Schedule 80 Pipe Pipe Size 1/2" 3/4" & 1" 1 1 / 4 " & 1 1 / 2 " 2" & 3" 4" to 24" 26" to 30" Factor 1.30 1.23 1.15 1.12 1.1 1.0
2,000 3,000
200 300 500 800 1,000
B
A
100
80
60 50 40 30 20
10
55
Tel: 610-495-5131 • Pottstown PA • USA •• www.watsonmcdaniel.com
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